JP4149870B2 - Lifting and moving device for objects to be transported - Google Patents

Description

  The present invention relates to an improvement of a lifting and moving device for a transported object of Japanese Patent No. 2745214, which has been patented by the applicant's own previous application. For example, computer related equipment and other various transported objects are transferred. The present invention relates to a lifting and moving device for transported objects and the like that can be moved and transported freely while transporting them to a necessary place such as an installation place by lifting them up by a simple operation.

  2. Description of the Related Art Conventionally, as shown in Patent Document 1, for example, as shown in Patent Document 1, a lifting and moving device for a transported object is a traveling traveling block arranged in a pair on the left and right along a traveling traveling direction, and is positioned in front of the traveling traveling block. The lifter is placed on the moving travel block so that the lifter to be inserted into the bottom surface of the transported object W is lifted by the lifting action of the lifting handle, and the advancing / retracting handle that is rotatably attached to the lifting handle. A possible forward / backward travel block is provided with a travel stabilization mechanism which is advanced below the lifted lifter and is retracted behind the movable travel block.

  In addition, the mobile travel block has a left and right roller frame that is substantially L-shaped when viewed from the side arranged at a predetermined interval relative to each other, and a front and rear travel supported between the front and rear horizontal portions of the left and right roller frames. The lifting mechanism is composed of a roller, and the lifting mechanism is pivotally supported on the upright part of the roller frame in the moving travel block. A handle and a lifter on which the object to be transported is placed in an L-shape as viewed from the side of the lower part of the lifter block that is slidably connected to the front end of the horizontal part. Lifts that are pivotably linked to each other and form parallel links with the horizontal part of the lifter block It is constructed from a link.

In other words, this parallel link is formed by connecting the lifter and the front end of the horizontal portion of the lifter block as a connecting structure of the right and left lifter blocks on the outer side of each of the left and right connecting pieces formed in a projecting manner in the shape of a relative hook on the back of the lifter. In addition, the inner side surfaces of the shafts are brought into contact with each other, and shaft pins are inserted into the contact portions. On the other hand, the connecting structure of the lifter and the lifting link is similarly brought into contact with the inner side surface of the lifting link arranged on the left and right on the outer side surfaces of the left and right connecting pieces, and the shaft pins are inserted into the contact portions, The link between the lifting link and the upper part of the upright portion of the moving traveling block is obtained by inserting a shaft pin into the contact portion between the lifting link and the moving traveling block.
Japanese Patent No. 2745214

  However, according to the above-described conventional technology, the left and right connecting pieces formed integrally and projecting on the back surface of the lifter are connected to the front end of the horizontal portion of the lifter and the lifter block, and the lifter and the lifting link. Although the linkage is linked via the shaft pin, the linkage piece itself cannot swing to the left and right with respect to the lifter block and the lifting link. Is impossible. For this reason, there has been a problem that the direction of the transported object cannot be freely changed during the traveling of the apparatus itself with the transported object placed on the lifter.

  Therefore, the present invention was created in view of the existing circumstances as described above.For example, when transferring or transporting computer-related equipment or other various transported objects, they are lifted by a simple operation. Transportable items that can be freely changed in direction during traveling and can be easily moved and transported to necessary locations such as installation locations, and can be easily handled by manual operation without requiring a special power source An object of the present invention is to provide a lifting and moving device.

In order to achieve the above-described object, in the present invention, a travelable travel block 1 that is arranged in a pair on the left and right along the travel direction, and an article to be transported positioned in front of the travel block 1. A lifting mechanism 10 disposed on the moving travel block 1 so that the lifter 15 to be inserted into the bottom surface of the W can be lifted and lowered by a swinging action of the lifting operation handle 14, and an advancing / retracting operation handle attached to the lifting operation handle 14 so as to be swingable. Lifting of a transported object or the like comprising a travel stabilization mechanism 20 in which the advancing / retreating travel block 21 that can travel by 24 is advanced below the lifted lifter 15 and retracted to the rear of the travel travel block 1. In the moving device, a parallel link mechanism is formed between the moving traveling block 1 and the lifter 15 via the hinge block 41, and The lifter 15 itself moves forward and backward through the forward / backward travel block 21 on which the shaft 42 provided on the hinge block 41 can swing left and right with respect to the intermediate block 41 and the lower edge of the rear side of the lifter 15 is rotatably mounted. A direction changing mechanism 40 that can swing left and right on the traveling block 21 is formed.
The direction changing mechanism 40 includes a turntable 63 supported by a rotation support portion 61 having a thrust bearing structure disposed on the advance / retreat travel block 21 so that the lift 15 is mounted on the advance / retreat travel block 21 so as to be relatively rotatable. At the same time, the U-shaped opening side of the hinge block 41 that is substantially U-shaped as viewed from the side is sandwiched between the upper and lower connecting pieces 16 that are formed integrally and projecting in the shape of a relative hook on the upper and lower sides of the lifter 15. In this manner, the shaft 42 is inserted into a hole formed so as to match the central portion of each of the connecting pieces 16 and the U-shaped end portions of the hinge block 41, and the shaft 42 rotates with respect to the connecting pieces 16. The hinge block 41 and the connecting piece 16 provided on the lifter 15 can be rotated relative to each other while being placed on the turntable 63 via the shaft 42 which is a shaft. It can be assumed that is so.

In the lifting and moving device for a transported object or the like according to the present invention configured as described above, the direction changing mechanism 40 has a lower side edge on the back side of the lift 15 on the upper surface of the rotation support portion 61 of the advance / retreat travel block 21. The lifter 15 itself can be freely moved to either the left or right side with respect to the moving travel block 1 through the connecting piece 16 that can swing left and right with the shaft 42 provided on the hinge block 41 as a rotation axis with respect to the hinge block 41. Rocks.
That is, when changing the direction of movement of the apparatus itself to the left or right side during traveling, the direction changing mechanism 40 remains in a state where the lifter 15 is placed on the turntable 63 of the advancing / retreating travel block 21, for example, the lift 16. If both the moving traveling block 1 and the traveling block 21 of the traveling stabilization mechanism 20 are rotated to the left or right using the lifting operation handle 14 while holding the upper corner portion with one hand, the direction changing mechanism 40 moves the hinge block 41 against the hinge block 41. The direction of the lifter 15 is changed to the left or right side with the shaft 42 as the rotation axis.
In this way, the lifter 15 is raised and lowered by swinging the lifting operation handle 14 so that the lifter 15 itself can be guided up and down along the vertical direction, and at the same time, the direction can be freely changed during the traveling movement. Move and transport to the required location.

  Since the present invention is configured as described above, for example, when transferring and transporting various computer-related equipment and other various objects to be transported W, they can be lifted up by a simple operation, and the direction can be freely changed during traveling. Therefore, it can be easily moved and transported to a necessary place such as an installation place, and can be easily handled by manual operation without requiring a special power source.

  That is, in the present invention, a parallel link mechanism is formed between the moving traveling block 1 and the lifter 15 via the hinge block 41, and the shaft 42 provided on the hinge block 41 is rotated relative to the hinge block 41. The direction changing mechanism 40 is configured so that it can swing left and right and the lifter 15 itself can swing left and right on the forward / backward travel block 21 through the forward / backward travel block 21 on which the lower edge of the rear side of the lifter 15 is rotatably mounted. This is because the direction change during the traveling movement can be smoothly performed by operating the lifting operation handle 14.

  The direction changing mechanism 40 includes a turntable 63 supported by a rotation support portion 61 having a thrust bearing structure disposed on the advance / retreat travel block 21 so that the lift 15 is mounted on the advance / retreat travel block 21 so as to be relatively rotatable. At the same time, the U-shaped opening side of the hinge block 41 that is substantially U-shaped as viewed from the side is sandwiched between the upper and lower connecting pieces 16 that are formed integrally and projecting in the shape of a relative hook on the upper and lower sides of the lifter 15. In this manner, the shaft 42 is inserted into a hole formed so as to match the central portion of each of the connecting pieces 16 and the U-shaped end portions of the hinge block 41, and the shaft 42 rotates with respect to the connecting pieces 16. The hinge block 41 and the connecting piece 16 provided on the lifter 15 can be rotated relative to each other while being placed on the turntable 63 via the shaft 42 which is a shaft. Thus, when changing the direction of movement of the device itself or the direction of the object W to the left or right during traveling, the lifting operation handle 14 is operated to turn the turntable of the roller frame 22 in the advance / retreat travel block 21. For example, while the lifter 15 is placed on the upper part 63, the moving traveling block 1 and the traveling block 21 of the traveling stabilization mechanism 20 are both left and right using the lifting operation handle 14 while holding the upper corner of the lift 16 with one hand. If it is rotated to either direction, the direction changing mechanism 40 can easily change the direction of the lifter 15 to the left or right side with respect to the hinge block 41 with the shaft 42 as the rotation axis. In this way, the lifter 15 is guided up and down along the vertical direction by the swinging movement of the lifter block 11 by the rotation operation of the lifting operation handle 14, and at the same time, the direction can be freely changed during the traveling movement. It can be easily moved and transported to the required location.

  Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 shown in the drawing indicates that the vehicle can run substantially in an L shape when viewed from the sides arranged in a pair on the left and right along the traveling direction. It is a simple traveling block. Each of the left and right moving travel blocks 1 itself has a left and right roller frame 2 that is substantially L-shaped when viewed from the side faced at a predetermined interval, and a lower horizontal portion of each of the left and right roller frames 2 in front and rear portions. The front and rear traveling rollers 3 are supported between the left and right sides, and the left and right moving traveling blocks 1 are integrated by a connecting bar 5 connected by screwing between horizontal portions of the roller frame 2 located inside and outside. Combined.

  In the drawing, the traveling rollers 3 of the roller frame 2 in each of the left and right moving traveling blocks 1 have a single-row structure along the traveling direction of travel, and between the left and right moving traveling blocks 1 are in a traveling stabilization mechanism 20 described later. An interval sufficient for arranging the advance / retreat travel block 21 is set.

  In addition, the moving travel block 1 is provided with a lifting mechanism 10 that is operated by a scissors action that is inserted into the bottom surface of the object to be transported W such as a computer-related device. The lifting mechanism 10 is substantially L-shaped when viewed from the side so as to protrude forward, and is a pair of lifter blocks 11 which are paired on the left and right, which are swingably supported on an upright portion of the roller frame 2 in the moving traveling block 1. The lifting operation handle 14 fixed to the upright portion of the rear portion of the lifter block 11 and a substantially L-shape when viewed from the side connected to the front end of the horizontal portion of the lifter block 11 via a hinge block 41, which will be described later. The lifter 15 on which the object to be transported W is placed, and the lifter 15 and the upright portion of the roller frame 2 in the moving travel block 1 are connected to each other so as to be swingable so as to form a parallel link with the horizontal portion of the lifter block 11. And a lifting link 17 to be provided.

  The lifter block 11 is formed by scoring an appropriately thick plate having a substantially L-shaped side surface so as to form a pair on the left and right sides, and a position in the vicinity of the rear portion of the horizontal portion and an upright portion of the roller frame 2. A swing shaft pin 12 inserted at the center position is swingably connected to the mobile travel block 1 so as to swing in an undulating manner with respect to the travel surface. The long pipe-shaped lifting operation handle 14 is fixedly fitted into the cylinder of the connecting cylinder 13 formed by tilting slightly rearward between the rear upright portions of the left and right lifter blocks 11.

  The lifting operation handle 14 is formed in the shape of a long pipe that is connected by a plurality of pieces as shown in the figure, or is formed as a single pipe, and the upper grip portion is slightly inclined to the front side upper side or the rear side lower side. When the lifter 15 is moved up and down by the swinging operation of the lifting operation handle 14, the grip portion is positioned around the waist of the operator before the lifter 15 is lifted. In addition, a horizontally-long rectangular frame-shaped grip 18 is integrally formed at the upper end of the lifting operation handle 14 so that the direction changing operation by the direction changing mechanism 40 described later can be more easily performed by holding the lifting operation handle 14. Considered to be able to do it.

  The lifter 15 is bent in a substantially L-shape when viewed from the side by a plate having a thickness and width so that the lifter 15 is lifted up by contacting the corner portion of the bottom of the transported object W, and the horizontal portion The tip edge is formed with a slightly acute angle in cross section so as to be forcibly inserted between the contact surfaces of the floor surface and the object to be transported W.

  As shown in FIGS. 2 and 3, the connection between the lifter 15 and the front end of the horizontal portion of the lifter block 11 is as shown in FIG. 2 and FIG. 3. In between, the U-shaped opening side of the hinge block 41 that is substantially U-shaped when viewed from the side is sandwiched and brought into contact with each other, and the central portion of each connecting piece 16 and the U-shaped end portions of the hinge block 41 are respectively The nut 42 is screwed and tightened into the threaded portion of the shaft 42 that protrudes to the opposite side of the lower connecting piece 16 after the shaft 42 is inserted into the hole formed in a state that matches the connecting piece 16. The hinge block 41 can swing left and right via a shaft 42 that is a rotating shaft. In other words, the connecting piece 16 can rotate about the shaft 42 with respect to the hinge block 41. Then, the front side inner surfaces of the left and right lifter blocks 11 and the lifting links 17 arranged on the left and right are brought into contact with the outer surface of the hinge block 41, and shaft pins are inserted into the contact portions. Further, the link between the lifting link 17 and the upper part of the upright portion of the moving traveling block 1 is such that a shaft pin is inserted into the contact portion between the lifting link 17 and the moving traveling block 1.

  Further, as shown in FIG. 7, a vertically long rectangular opening is provided between the pair of upper and lower connecting pieces 16 on the back surface of the lifter 15, and the connecting piece 16 rotates about the shaft 42 with respect to the hinge block 41. In this case, the front end portions of the lifter block 11 and the lifting link 17 connected to the hinge block 41 do not interfere with the back surface of the lifter 15.

  As shown in FIG. 8, the lower surface of the large-diameter upper circular opening 64 and the small-diameter lower circular opening 65 respectively formed in the upper and lower two-plate plate surface portions formed in the center of the upper surface of the roller frame 22. The rotation of the thrust bearing structure is inserted into a bottomed cylindrical fitting groove 66 in which the side circular protrusion is fitted on the lower circular opening 65 side and the upper opening side matches the upper circular opening 64 with the same diameter. A turntable 63 is fitted in a state where one side wheel portion of the support portion 61 is fitted and the other side wheel portion that is rotatable via the ball bearing 62 protrudes above the upper circular opening 64 on the upper surface side. Yes. When the advancing / retreating travel block 21 protrudes forward to the front side of the traveling travel block 1, the lift 15 itself is attached to the shaft 42 in a state where the lower edge of the back side of the lift 15 is placed on the upper surface of the turntable 63 of the rotation support 61. It can be rotated around the axis. At this time, the shaft 42 serving as the rotation axis of the connecting piece 16 is arranged so as to be coaxial with the rotation center axis of the rotation support portion 61 so that the rotation operation of the lift 16 on the roller frame 22 can be performed smoothly. .

  By doing so, the horizontal portion of the lifter block 11 and the lifting link 17 respectively connect the hinge block 41 between the vertical portions of the upright portion of the moving traveling block 1 and the connecting piece 16 of the lifter 15 that are arranged upright in the front and rear. And a link piece 16 that can be swung left and right about a shaft 42 provided on the hinge block 41 as a rotation axis, and a lower rear side of the lifter 15. Through the rotation support part 61 at the center of the upper surface of the roller frame 22 on which the edge is placed, the lifter 15 itself forms a direction changing mechanism 40 that can freely swing on the left or right side on the roller frame 22. That is, the lifter 15 itself is guided up and down along the up-and-down direction by swinging up and down of the lifter block 11 by the swinging operation of the lifting operation handle 14, and at the same time the direction of movement or the direction of the object W to be transported is changed during traveling. It can be freely performed and can be easily moved and transported to a necessary place such as an installation place (see FIGS. 3 and 5).

  Further, the travel stabilization mechanism 20 is arranged to advance under the lifted lifter 15 so as to achieve stability during travel in a state where the article to be transported W is placed, via the guide means 35 along the travel direction. A forward / backward travel block 21 that can travel forward and backward, a forward / backward operation handle 24 rotatably attached to the lifting operation handle 14, and a connecting rod 29 that connects the forward / backward travel block 21 to the forward / backward operation handle 24. Be prepared.

  As shown in FIGS. 1 and 3, the advancing / retreating travel block 21 is arranged between the left and right moving travel blocks 1, and a roller frame 22 that is long along the front and rear of the groove shape in a cross section with an opening below. A traveling roller 23 is supported between the left and right sides of the rear part, and casters 51 are arranged at symmetrical positions in the front part of the roller frame 22.

  The advancing / retracting operation handle 24 is provided so as to be swingable substantially at a mid position in the height direction of the lifting operation handle 14, and as shown in FIG. 3 and FIG. The handle frame 15 itself is made swingable in the direction along the lift operation handle 14 by the handle shaft pin 26 that is also inserted between the handle frames 25 arranged in this manner. For example, a spherical knob 27 is connected to an upper end located above 14, and a connecting pin 28 is horizontally mounted between lower ends located below the lifting operation handle 14.

  The advancing / retracting operation handle 24 and the advancing / retreating travel block 21 are connected by a connecting rod 29. As shown in the figure, the connecting rod 29 is connected between the connecting pin 28 at the lower end of the advancing / retracting operation handle 24 and the roller shaft of the traveling roller 23 at the rear part of the advancing / retreating traveling block 21, and is freely rotatable on each of the connecting pin 28 and the roller shaft. It is formed by a pipe or bar having a substantially U-shaped engagement end 31 at both ends in a cross section engaged from above. The connecting rod 29 itself is arranged along the lower side of the lifting operation handle 14. When the upper end of the advancing / retracting operation handle 24 is in an upright position located on the lower end side of the lifting operation handle 14, the advancing / retreating travel block 21 moves and travels. When the upper and lower ends of the block 1 are located on the upper end side of the lifting operation handle 14 due to the swing of the forward / backward operation handle 24, the advancing / retreating traveling block 21 of the moving traveling block 1 is moved. It is assumed to protrude forward.

  Further, the guide means 35 for guiding the advancing / retreating travel block 21 with respect to the traveling travel block 1 along the traveling travel direction is provided between the traveling travel blocks 1 so that the left and right traveling travel blocks 1 are integrated with each other. The roller frame 2 is a slide long hole that is long drilled along the front-rear direction on the side of the roller frame 22 of the advancing / retreating travel block 21 so as to insert the connecting bar 5 that is inserted into the roller frame 2. The forward / backward range of the forward / backward traveling block 21 itself is regulated by the connecting bar 5 coming into contact with the front and rear end edges of the slide long hole. That is, for example, the forward movement restricting position of the forward / backward traveling block 21 is the rotation support portion of the roller frame 22 in a state where the shaft 42 that is the rotation shaft of the connecting piece 16 is arranged coaxially with the rotation center axis of the rotation support portion 61. The connecting bar 5 is brought into contact with the rear end edge of the slide long hole so that the lower edge of the rear side of the lift 15 can be locked on the upper surface of the turntable 63 attached to 61.

  In order to explain an example of the use of the lifting and moving apparatus according to the present invention configured as described above, as shown in FIG. 4, the forward / backward traveling block 21 is moved backward and the lifter 15 is positioned downward. For example, the object to be transported or transported is forcibly inserted into a gap with the floor surface obtained by inclining the object to be transported W on the bottom surface of various objects to be transported W such as computer-related equipment. After the insertion, the lifting operation handle 14 is tilted and swung to lift the lifter 15 to lift the article W to be transported, and the article W to be transported is placed on the lifter 15. The forward / backward travel block 21 is moved forward and forward with respect to the handle 14 so as to protrude forward from the moving travel block 1 and is disposed below the lifter 15, and the lifter 15 is lowered onto the forward / backward travel block 21, thereby connecting pieces. The lower edge of the rear side of the lift 15 is placed on the upper surface of the turntable 63 so that the shaft 42 serving as the rotation shaft 16 is coaxial with the rotation center axis of the rotation support portion 61 of the roller frame 22. Thereby, the rotation of the lift 16 on the roller frame 22 can be smoothly performed by, for example, operating the upper corner portion of the lift 16 with one hand, and the load of the transported object W is supported by the advancing / retreating travel block 21. Then, it is moved to a predetermined place by the lifting operation handle 14 (see FIG. 3).

  In addition, as shown in FIG. 5, when changing the moving direction of the apparatus itself or the direction of the transported object W to the left or right side during the traveling movement, the roller frame in the advancing / retreating traveling block 21 is operated by operating the lifting operation handle 14. For example, while the lifter 15 is placed on the upper surface of the turntable 63 of the rotation support portion 61 of 22, the moving traveling block 1, traveling stability is maintained using the lifting operation handle 14 while holding the upper corner portion of the lift 16 with one hand. If the forward / backward travel block 21 of the mechanism 20 is swung to the left or right, the direction changing mechanism 40 turns the lifter 15 to the left or right side with respect to the hinge block 41 with the shaft 42 as the rotation axis (FIG. 5 (a ), (B)). After the movement, the advancing / retreating operation handle 24 is operated to retract the advance / retreat traveling block 21, while the lifter operating handle 14 is operated to lower the lifter 15 to lower the transported object W, and the lifter 15 is extracted from the bottom surface of the transported object W. Is.

  It should be noted that not only when the object to be transported W is lifted and moved alone, but also a plurality of objects to be transported W may be mounted in appropriate directions and used in combination as appropriate. .

It is a disassembled perspective view which shows the best form for implementing this invention. It is a perspective view of the state before raising similarly. It is sectional drawing of the state after raising similarly. It is sectional drawing of the state before raising similarly. Similarly, it shows an example of direction change by the direction change mechanism, (a) is a plan view of the main part before the direction change, (b) is a plan view of the main part after the direction change. Similarly, the structure of a moving travel block is shown, (a) is a sectional view of the main part, (b) is a plan view of the main part. It is a front view of a lifter similarly. It is sectional drawing which shows the principal part of a direction change mechanism similarly.

Explanation of symbols

W ... Transported object 1 ... Moving travel block 2 ... Roller frame 3 ... Traveling roller 5 ... Linking bar 10 ... Lifting mechanism 11 ... Lifter block 12 ... Oscillating shaft pin 13 ... Connecting cylinder 14 ... Lifting operation handle 15 ... Lifter 16 ... Linking piece 17 ... Lifting link 18 ... Grasping part 20 ... Traveling stability mechanism 21 ... Advancing and retreating running block 22 ... Roller frame 23 ... Traveling roller 24 ... Advancing and retracting handle 25 ... Handle frame 26 ... Handle shaft pin 27 ... Knob 28 ... Linking pin DESCRIPTION OF SYMBOLS 29 ... Connecting rod 31 ... Engagement end 35 ... Guide means 40 ... Direction change mechanism 41 ... Hinge block 42 ... Shaft 43 ... Nut material 51 ... Caster 61 ... Rotation support part 62 ... Ball bearing 63 ... Turntable 64 ... Upper circular opening Part 65: Lower circular opening 66 ... Fitting groove

Claims (1)

  A movable traveling block arranged in a pair on the left and right along the traveling direction, and a lift by lifting the lifter to be inserted into the bottom of the object to be transported positioned in front of the traveling block. The advancing / retreating block that can be driven by a lifting mechanism arranged on the moving traveling block so as to move up and down, and an advancing / retreating operation handle attached to the lifting operation handle so as to be swingable is moved forward below the lifted lifter, and is also moved and moved. In a lifting and moving device for a transported object or the like provided with a traveling stabilization mechanism that is moved backward to the block, a parallel link mechanism is formed between the moving traveling block and the lifter via a hinge block, and the hinge With respect to the block, it can swing left and right around the shaft provided on the hinge block as the rotation axis, and the back side of the lifter Through the forward / backward travel block on which the edge portion is rotatably mounted, a lifter itself forms a direction changing mechanism that can swing left and right on the forward / backward travel block, and the lift rotates relative to the forward / backward travel block. The upper and lower sides are provided with a turntable supported by a rotation support part with a thrust bearing structure arranged on the advancing and retreating block so that they can be placed on the back and forth, and are integrally projected in the form of a relative hook on the top and bottom of the lifter back Between the connecting pieces, the U-shaped opening side of the hinge block that has a substantially U-shape when viewed from the side is sandwiched and brought into contact with each other. A state in which the shaft is inserted into the hole portion drilled in a state that matches each of the above, and is placed on the turntable via the shaft that is the rotation shaft with respect to the connecting piece A hinge block, the mobile device lifting such the consignment, characterized in that the interlocking piece provided on the lifter are set to be relatively rotatable.

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